Parasitic Fungi of Illinois. 187 
usually furnished with punctiform to wart-like projections, 
18-25 by 30-45 u; pedicels hyaline, fragile, not usually longer 
_ than the spore. 
Uredo flosculosorum, Alb. & Schw. Uredo black, sori scattered, 
minute, subrotund, pulvinate, powder rather loose, spores unequal, 
subcaudate.— Albertini and Schweinitz, Conspect. Fung. p. 128. 
On Cirsium discolor: Adams, J uly 6, 5425, II. C. lanceo- 
latum: LaSalle, June 19, 5237, IL., Sept. 29, 6241, IT., IIL; 
Tazewell, July 22, 2410, IT., Lee, Sept. 8, 5718, II.; Stephen- 
son, Sept. 14, 5890, II.; JoDaviess, Sept. 18, 5986, II., IIL; 
Rock Island, Sept. 21, 1608, II., IIT. Sept. 24, 1645, II., IIT., 
Sept. 26, 1663, IT., IIL, Sept. 27, 1674, IL, IIL; Ogle, Sept. 23, 
6149, II.; Fulton, Oct. 1, 1770, IL, ITT., McLean, Oct. 6, 1794, 
II., IIL, Oct. 12, 1841, IL, III., 1848, ID., IIL, Oct. 13, 1858, 
IT., IIL., Oct. 18, 1890, IT., IIT.; Champaign, Nov. 9, 2389, II., 
JIL., Nov. 12, 2390. Taraxacum dens-leonis : McLean, May 
20, 4776, H., May 20, 4828, IL., July 6, 2391, IL, July 16, 2392, 
II., July 25, 2393, IL., Oct. 11, 1835, IL; Champaign, June 8, 
4902, II., Nov. 7, 2277, IL, IIT.; LaSalle, June 19, 5229, IT., 
Sept. 14, 1540; Adams, July 7, 5447, IL, July 11, 5501, IL; 
McHenry, Aug. 22, 1218, II.; Boone, Sept. 2, 1419, IL; Ste- 
phenson, Sept. 13, 5828, II.; Rock Island, Sept. 21, 1613, IT., 
Sept. 24, 1653, II. Hieraciwm Canadense: McHenry, Aug. 20, 
1197; Boone, Sept. 2, 1426; Stephenson, Sept. 13, 5833, II., 
IIT.; Ogle, Sept. 28, 6130, II., ILI.; LaSalle, Sept. 30, 6256, IT., 
Ill. 
Under this species are included the forms that have been 
known on Cirsium as P. cirsii, Lasch., and P. compositarum, 
Schl., on Taruxacum as P. variabilis, Grev., and on Hieracinm 
as P. hieracii, Mart. The teleutospores of American specimens 
are very minutely warty, or apparently smooth, agreeing with 
Winter's remarks on this species in Hedwigia, XIX., p. 20. 
Nearly or quite all the specimens on Cirsium (except No. 2410) 
present both uredo- and teleutoforms, but on T'araracum teleu- 
tospores are found only in specimens collected late in the sea- 
son (No. 2277). 
